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o. A. WILLIAMSON,

STOVE.

No.. 265,204; Patented Septr, y18812.

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o. WILLIAMSON 4 MOVE. No. 265,204. Patented Sept. 26, 1882.

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UNITED STATES PATENT OFFICE.

CATHERINE A. WILLIAMSON, OF S'I. LOUIS, MISSOURI.

STOVE.

SPECIFICATION forming part of Letters Patent No. 265,204, datedSeptember 26, 1882.

n Application nieu July 6,1882. (No moua.)

To all whom it may concern:

Be it known that I, CATHERINE A. WIL- f LIAMsoN, of St. Louis, Missouri,have made a new and useful Improvement in Stoves, of which the followingis a full, clear, and exact description, reference being had to theannexed drawings, making part of this specification, in which- Figure 1is a view in perspective of a cooking'stove having the improvement; Fig.2, a plan of the stove; Fig. 3, a plan of the stoveoven bottom; and Fig.4, a vertical section, upon an enlarged scale, taken through the topplate of the stove our through the ovenbot tom.

The same letters denote the same parts.

The tops of ordinary cooking-stoveshave hitherto beenmade dat. As thusconstructed, the bottom of a utensils-such as a panthroughout its extentis closely in contact with the stove-top, and practically no air cancirculate between the stove-top and the bottom of the utensil. I havediscovered that herein is a prominent cause ot' the frequent burning ofthe contents of the utensil, and to remedy the difficulty is the aim ofthis improvement, which consists in so shaping the stove-top as toprovide an air space or spaces between theutensil and stove-top, throughwhich passages the air can circulate during the cookingoperation.

The mode of carrying out the improvement is shown in the drawings.

In the top a of the stove A are a number of shallow grooves, a a a', thegrooves running both longitudinally and transversely in the stove-top a.These various grooves ct constitute, when the utensil is in positionupon the stove,I the desired air-spaces. The grooves can be of anydesired shape in crosssection, but the grooves must extend at least twoways in the stove-top, and the two sets of grooves must intersect, forif the grooves extended but one way only the air could circulate but oneway over the stove, and as the direction of the air-current about astove-top is constantly changing and the air is liable to set in anydirection it is necessary to provide channels to receive the airwhichever way it moves. In practice it suffices if two sets of channelsare used, and at right angles toeach other, as shown, for a sideair-current is thus Y Vto be turned around,causing the grooves in thecovers and the grooves in the fixed part of the stove-top to runcrosswise to each other, the grooving of the covers operates practicallyto supply means by which parallel grooves in the xed part of thestove-top are connected.

I am aware that an inclosed frying and broiling apparatus having aninclined top and having grooves extending from the upper to the loweredge of the top for the purpose of collecting the drippings of the meatwhich in cooking is laid directly upon the top, has been used. Theapparatus referred to, however, is in effect an imperforate gridiron orcorrugated frying-pan, and in use inclosed by a cover, from the outerair, and would not in any way `answer my present purpose.l

I claim- 1. An ordinary cooking-stove the top of which is open to theair and grooved, the grooves extending through the movable covers aswell as through the fixed part of the stovetop, for the purposedescribed.

2. An ordinary cooking-stove top open to the air and having two or moresets of grooves,

